Index: php5-5.3.3.1/ext/standard/iptc.c
===================================================================
--- php5-5.3.3.1.orig/ext/standard/iptc.c	2016-02-27 12:13:05.000000000 +0100
+++ php5-5.3.3.1/ext/standard/iptc.c	2016-02-27 12:13:35.000000000 +0100
@@ -38,6 +38,10 @@
 
 #include <sys/stat.h>
 
+#ifndef SIZE_MAX
+#define SIZE_MAX        ((size_t)~0)
+#endif
+
 
 /* some defines for the different JPEG block types */
 #define M_SOF0  0xC0            /* Start Of Frame N */
@@ -202,6 +206,11 @@
 		RETURN_FALSE;
 	}
 
+        if ((size_t)iptcdata_len >= SIZE_MAX - sizeof(psheader) - 1025) {
+                php_error_docref(NULL TSRMLS_CC, E_WARNING, "IPTC data too large");
+                RETURN_FALSE;
+        }
+ 
 	if ((fp = VCWD_FOPEN(jpeg_file, "rb")) == 0) {
 		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to open %s", jpeg_file);
 		RETURN_FALSE;
@@ -210,7 +219,7 @@
 	if (spool < 2) {
 		fstat(fileno(fp), &sb);
 
-		poi = spoolbuf = safe_emalloc(1, iptcdata_len + sizeof(psheader) + sb.st_size + 1024, 1);
+                poi = spoolbuf = safe_emalloc(1, (size_t)iptcdata_len + sizeof(psheader) + 1024 + 1, sb.st_size);
 		memset(poi, 0, iptcdata_len + sizeof(psheader) + sb.st_size + 1024 + 1);
 	}